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CONVEYING
SYSTEM
ALARMS
UGC007/0702 Basic 32 Loader Control
TROUBLESHOOTING 6-7
Alarm
No Material Alarm
(continued)
Pump Overload
Possible cause
Vacuum pump is not
working correctly.
The fill/demand sensor or
demand switch is not
working properly.
Compressed air lines are
not connected correctly.
The vacuum pump
overload has tripped.
Solution
Verify that the vacuum pump
is on, connected to the B32
and working correctly. Refer to
the pump manual.
r Verify that sensors and
switches are connected
correctly at the loader or
hopper and at the control.
r Verify that fill and demand
sensors are set at the correct
height and adjusted proper-
ly. Refer to manuals sup-
plied with the fill or
demand signaling device.
If a compressed air line is not
connected to vacuum or mater-
ial valves, the valves cannot
open to allow the pump to
draw material into the receiver.
Verify that compressed air
lines supplying the correct
pressure have been connected
to the vacuum sequencing
valve, ratio valve, pocket con-
veying or purge valve.
This alarm will prevent the
pump from being energized
until the overload is corrected.
Refer to the pump manual to
correct the problem.